I ran the tckline road and track on my 335. The quality leaves a lot to be desired. I believe part of it is they don't manufacture the shocks etc themselves & the other part is the customer service.

Back in the day they were all the rage and still is to an extent but with quality products like Ohlins and JRZ at similiar pricing, I would rather go with those if I'm going to upgrade the stock edc suspension on the M3s.

Quality in look and feel or quality in function? I have rarely heard a complaint about TCK on a primarily street driven car.